JOURNAL OF CHEMICAL THERMODYNAMICS
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2019
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IF 2.29
Jing Fan,Bin Cui,Shuangshuo Liu,Fenhong Song,Xiaopo Wang
Biodiesel has been considered as one of the feasible attempts to replace the fossil fuels. Alcohols always played a role as the additives to improve the certain properties of biodiesel. In this work, the liquid thermal conductivity of binary mixtures of methyl laurate usually the significant biodiesel component with three alcohols (1-propanol, 1-butanol and 1-pentanol) was measured with the temperature ranging within 287 K to 358 K at atmospheric pressure. The total standard uncertainty of the experimental results was estimated to be less than 2% (in the 0.68 confidence level) and the repeatability was better than ±0.5%. In addition, three useful correlations for estimating the thermal conductivity of mixtures have been fitted and optimized, and the maximum deviation of three correlations were less than 1.30%.
研究领域:
能源化学
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燃料科学
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热物理性质
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可再生能源
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生物燃料
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高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Yuchao Lyu,Yaru Xue,Wenjing Zhang,Li Dong,Nan Yang,Xiaoxuan Yin,Junhao Liu,Jianye Fu,Yuling Shan,Xinmei Liu
Hydrogenation of fatty acids and their esters is currently the most established technology for producing bioaviation fuels. The deoxygenation pathway critically determines both the reaction efficiency and combustion properties of the resulting fuels. However, previous works primarily focused on the deoxygenation pathway of fatty acids, with limited attention to fatty acid esters (e.g., fatty acid methyl ester, FAME). Herein, a NiCo bimetallic catalyst was employed to regulate the full deoxygenation pathway of FAMEs by modulating the adsorption configuration and binding modes of reactants with catalysts. The catalyst features Ni0, Co0, and NiCo alloy sites, with electron transfer from Co to Ni. The synergetic electronic and geometric effects of Ni and Co promote hydrogenolysis of FAMEs to fatty acid and methane rather than aldehydes and methanol. This is attributed to the enhanced σ-type coordination between Co and alkoxy oxygen, facilitating the formation of a δ+–C–O–δ– structure and further polarizing the alkoxy C–O bond. Moreover, the coupling effect of NiCo also selectively enhances the hydrodeoxygenation (HDO) pathway by stabilizing the η2(C,O)–aldehyde adsorption configuration of intermediates with stronger adsorption of a carbon atom on electron-rich Ni0 and an oxygen atom on oxophilic Co0. In the hydrogenation of methyl laurate, the NiCo catalyst achieves a C12 + C11 space-time yield of 32.5 mmol·g–1·h–1, with a C12/C11 ratio of 11.7, which is more than two times that of the Ni monometallic catalyst.
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Liangyu Zhai,Atawulla Nurmemet,Abdulla Eziz,Anwar Mamat,Abulikemu Abulizi,Hongyuan Zeng,Ailijiang Nuerla,Min Liu
A carbon-rich precursor was extracted from coal gangue by gradient purification. • Molten salt-assisted activation regulated pore structure and surface chemistry. • The optimized porous carbon exhibited high surface area and defect density. • High-capacity cationic dye adsorption was achieved by CGC-124. • DFT revealed enhanced binding by oxygen-containing functional groups. Coal gangue is a massive coal-based solid waste containing intrinsic carbonaceous matter that remains underutilized for the preparation of high-value functional carbon materials. Herein, coal gangue was converted into hierarchically porous carbon through gradient purification and molten salt-assisted KOH activation. Flotation followed by sequential HF/HCl leaching effectively removed mineral impurities and enriched the carbonaceous fraction. During activation, the NaCl/KCl molten salt medium promoted more uniform KOH etching and moderated excessive corrosion of the carbon framework, facilitating hierarchical pore development while retaining oxygen-containing surface functionalities. The optimized porous carbon, CGC-124, exhibited a specific surface area of 2964.39 m 2 /g, abundant defects, and surface hydroxyl/carboxyl groups. Using methylene blue (MB) as a representative cationic dye, CGC-124 achieved an adsorption uptake of 2798.48 mg/g at 318 K. Kinetic analysis was consistent with a surface-controlled process with chemisorption-like characteristics, whereas the better Freundlich fitting reflected the heterogeneous nature of the carbon surface. Experimental characterization and DFT calculations indicated that pore filling, electrostatic attraction, hydrogen bonding, π–π interactions, and interactions involving oxygen-containing groups jointly contributed to MB adsorption. This work provides a route for converting coal gangue into high-surface-area porous carbon and offers insight into molten salt-assisted pore engineering for cationic dye adsorption. Download: Download high-res image (160KB) Download: Download full-size image
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 2
·55
·
IF 2.4
Yu Yang,Song Xuefeng,Su Wenli,Jing Wenjiang,Fan Yu
To meet aviation decarbonization targets, efficient catalysts for bio-jet fuel are needed. Hydrodeoxygenation (HDO) is an indispensable step in converting lipid feedstocks to jet-range hydrocarbons, which critically depends on the pore architecture, acidity distribution and metal dispersion of the catalysts. In this work, a layered SAPO-11 (LS) molecular sieve was synthesized using the polyamine surfactant (C 22 H 45 -N(CH 3 )-C 6 H 12 -N(CH 3 ) 2 ) as a micro-mesopore-directing agent. Ni species were introduced to obtain a series of Ni x /LS catalysts with the Ni loadings of x wt% ( x = 3.0, 6.0, and 9.0), in which Ni 6 /LS exhibited the best HDO performance. Using methyl laurate (ML) as a model feedstock, at the optimized conditions of 360 °C, 2.0 MPa and a weight hourly space velocity (WHSV) of 6.0 h − 1 , the Ni 6 /LS catalyst had the 99.6% conversion of ML with the 97.3% selectivity toward C 11 -C 12 alkanes, surpassing the conventional Ni 6 /microporous SAPO-11 (Ni 6 /MS) catalyst and the literature-reported catalysts. The superior lipid HDO performance of Ni 6 /LS was attributed that the layered architecture of LS provided a larger specific surface area and more mesoporous channels than MS, greatly promoting the high dispersion of Ni species. Graphical
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2025
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IF 6.2
Liuyang Wang,Pei Guo,Xiaofang Zhang,Jianqing Guo,Runjie Meng,Jun Ning,Tao Zhang
Sex pheromones, which play a critical role in mediating sexual communication of Lepidoptera, are biosynthesized by a variety of particular enzymes in specialized pheromone glands (PGs). Among these enzymes, fatty acyl-CoA reductases (FARs) catalyze the reduction of fatty acyl precursors to their corresponding alcohols. In this study, we identified 32 FARs from the genome of Mythimna loreyi, an important agricultural pest. Among all MlorFARs identified, only MlorFAR1 showed a PG expression pattern and exhibited a positive response to pheromone biosynthesis activating neuropeptide (PBAN) injection. Silencing MlorFAR1 reduced pheromone titers by 70.4–88.9% and significantly reduced mating rates at the 48–72 h postinjection time point. Heterologous expression in yeast confirmed that MlorFAR1 preferentially converted medium-chain fatty acid methyl esters to alcohols. These findings establish MlorFAR1 as a pivotal enzyme in the biosynthesis of sex pheromones in M. loreyi, providing a framework for the development of innovative pest management strategies.
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PubMed
高影响因子
WASTE MANAGEMENT
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2023
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IF 8.1
Hongxu Lu,Yanxia Liu,Wenyue Shen,Yang Zhou,Xiangwei Ma,Shibo Sun,Xiaoying Dong,Fengyun Ji,Huiyan Tong,Jianqiang Xu,Gaohong He,Weiping Xu
Food waste can be converted into insectile fatty acids (FAs) by the larvae of black soldier fly (BSFL), Hermetia illucens , for use in the feed sector or as a source of biodiesel. However, waste oil was less decomposed than carbohydrate or protein in frass due to the limitation of larval lipid metabolism. In this study, 10 yeast strains were screened, corresponding to six species, to examine their capacity of improving lipid transformation performance by BSFL. The species of Candida lipolytica was superior to the other five species, which exhibited significantly higher lipid reduction rate (95.0–97.1 %) than the control (88.7 %), and the larval FA yields achieved 82.3–115.5 % of the food waste FA matters, suggesting that BSFL not only transformed waste oil but also biosynthesized FAs from waste carbohydrate and other substances. Further, the CL2 strain of Candida lipolytica was examined for treating food waste containing high lipid content (16–32 %). The lipid removal rate was found improved from 21.4 to 42.3 % (control) to 80.5–93.3% in the waste containing 20–32 % lipid. The upper limit of lipid content that could be endured by BSFL was ≈16 %, and the CL2-enrichment elevated the upper limit to ≈24 %. Fungal community analysis indicated that Candida spp. accounted for the lipid removal improvement. The Candida spp. CL2 strain may facilitate the lipid reduction and transformation by BSFL through microbial catabolizing and assimilation of waste FAs. Altogether, this study suggests that yeast enrichment is feasible in improving lipid transformation by BSFL especially for food waste exhibiting high lipid content.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qi Zeng,Mengmeng Sun,Xin Xie,Yuli Zhang,Haoyue Hou,Xingyuan Fang,Ting Guo,Hao Yuan,Tao Meng
Pickering interfacial biocatalysis (PIB) paves the way for efficient enzymatic catalysis in the biphasic system. However, the Pickering interfacial biocatalysts located on the oil–water interface still face the inevitable deactivation when one of the phases contains the reactant that inactivates the enzyme. Herein, the positioning of lipase-entrapped colloidosomes (LECs) at the emulsion interface is rationally designed by physically tuning the wettability, which allows LECs to protrude into the selected phase to protect the lipase away from the damage of the reactant. As a proof of concept, LECs with different positioning at the interface are used as Pickering interfacial biocatalysts to produce biodiesel by esterification of lauric acid and methanol. Impressively, the LECs that protrude into the oil phase possess an optimal catalytic performance to protect more lipases away from the damage of the reactant of short-chain alcohol, which shows an 8.18-fold enhancement in specific activity relative to the free lipase, reach a biodiesel yield of 80.37% after 8 h, and retain the 96.44% of relative activity after 10 cycles. This study provides a novel and robust platform for Pickering emulsion-enhanced biocatalysis.
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PubMed
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FUEL PROCESSING TECHNOLOGY
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2022
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IF 8.129
Tinghu Wang,Wenjing Zhang,Yuzhi Li,Furang Li,Junhao Liu,Lei Fan,Jianye Fu,Xinmei Liu,Yuchao Lyu
The synergistic effect of metal and acid centers influences performance of bifunctional hydrodeoxygenation (HDO) catalyst significantly. However, seldom work concerning this point has been performed quantitatively. Herein, the Ni/Beta catalysts were prepared for HDO of methyl laurate to bio-jet fuels. The ratios of metal to acid centers (n Ni /n A ) were used to quantitatively express the synergistic effect and correlated to the HDO performance. The transformation of methyl laurate mainly stagnates at fatty acid over the mono-functional catalyst (n Ni /n A = 0), while the acid centers are indispensable for the efficient transformation of methyl laurate at relatively mild reaction conditions. The TOF and selectivity to C 11 and C 12 alkanes increase and then keep constant with the increasing n Ni /n A . The turning point at the n Ni /n A of 0.67 implies that one nickel center over the Ni/Beta catalyst can balance ca. 1.5 acid centers in the HDO of methyl laurate. Besides, the higher n Ni /n A favors the HDO reaction pathway compared with the decarbonylation or decarboxylation ones. It increases the selectivity to C 12 alkanes and improves efficiency of atomic utilization during the hydrodeoxygenation of methyl laurate. This work provides a deeper insight into the quantitative synergy of active sites over the bifunctional HDO catalyst for production of bio-fuels.
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MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 308
·期 5
·2200559
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IF 4.402
Lingcheng Meng,Jinling Zhang,Shuang Zhao,Desheng Qi,Pan Xu,Shuoqi Wu,Le Wang,Xigui Yue,Zhenhua Jiang
Polyaryletherketone is a kind of special engineering plastics with excellent comprehensive properties, high strength, good stability, and almost insoluble in any common solvent except concentrated sulfuric acid at room temperature. However, its high processing temperature also hinders its application and development in the foam. Here, a series of polyetheretherketone (PEEK) and diphenyl polyetheretherketone (PEDEK) composite foams are prepared by temperature induced phase separation, using diphenyl sulfone as solvent. The microstructure, thermal and mechanical properties of PEEK and PEDEK foam are compared. Highly porous PEEK and PEDEK foams with densities ranging from 0.13 to 0.25 g cm −3 , with compressive strength ranging from 0.68 to 2.6 MPa, respectively, are produced. Meanwhile, the introduction of diphenyl structure can effectively improve the performance of PEEK foams at high temperature. It is found that PEDEK foam has a higher operating temperature than PEEK, and the compressive strength of 0.24 g cm −3 foam is still ≈1 MPa at 200 °C.
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JOURNAL OF SOLUTION CHEMISTRY
·
2022
·Vol. 51
·期 7
·752-767
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IF 2
Li Dan,Pang Yan,Wang Jingying,Sun Danlin,Zhang Xuena,Yue Danwei,Hao Longxia
Three C8 alkanes ( n -octane, iso -octane and ethyl cyclohexane) as additives were blended with methyl laurate to prepare binary systems of fuel blends for density, viscosity and refractive index measurement. The excess properties of volumes and viscosity of the three binary systems (methyl laurate + n -octane), (methyl laurate + iso -octane) and (methyl laurate + ethyl cyclohexane) were obtained and compared, which were also fitted to Redlich–Kister equation. The correlated values from Redlich–Kister equation are in good agreement with those from experimental data. The results can be used for the research of the mixture behaviors and development of biodiesel-diesel fuel blends.
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Journal of Sensors
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2022
·
IF 2.336
Chenchen Zhou,Junjun Fan,Ruinan Tan,Qin Peng,Junhuo Cai,Wangxiang Zhang
Linalool is a well-known volatile compound. It is usually extracted from plants or synthesized by chemical methods. However, there is still no rapid screening method for plants with high linalool content. Therefore, we aimed to establish a method determining linalool content in Osmanthus fragrans by electronic nose (E-nose). The volatile gases of three cultivars of O. fragrans were characterized by gas chromatography-mass spectrometry (GC-MS) and E-nose. Different concentrations of linalool were measured by E-nose. Then, the E-nose data were subjected to principal component analysis (PCA) and linear discriminant analysis (LDA) to establish a discriminant model for determining linalool concentrations. Prediction models based on principal component regression (PCR) and multiple linear regression (MLR) were developed from all sensors and feature sensors to determine linalool concentrations in the three cultivars of O. fragrans flowers. Finally, the linalool concentrations determined by gas chromatography were used to verify the accuracy of the prediction model. The results show that linalool had the highest abundance among the volatile compounds of O. fragrans, and the MLR prediction model had an of 0.992 in calibration sets and an of 0.895 in prediction sets using 10 sensors. This study describes a rapid and accurate method for the detection and quantification of linalool concentrations.
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FUEL
·
2022
·
IF 8.035
Lin Fu,Zhaoxin Liu,Xin Li,Yongfei Li,Houyi Yang,Yuejin Liu
Ni-catalysts usually experienced quick deactivation during bio-lipids deoxygenation due to metal sintering and coke. Here we prepared a series of Ni/CeO 2 -Al 2 O 3 catalysts, denoted as NiCeAl-EISA, NiCeAl-WI and NiCeAl-CP, prepared by evaporation-induced self-assembly (EISA), wetness impregnation (WI), co-precipitation (CP) methods, respectively, aiming at tuning metal-support interaction (MSI) in Ni/CeO 2 -Al 2 O 3 catalysts for the deoxygenation of bio-lipids to hydrocarbons. The porosity and surface properties of the catalysts are systematically studied by BET, XRD, H 2 -TPR, HR-TEM, FT-IR, O 2 -TPD, NH 3 -TPD, RPR, Py-FTIR, XPS and in situ XPS. The NiCeAl-EISA catalyst afforded 92.2% n-C 11 yield at full methyl laurate conversion, and efficiently deoxygenated different FAMEs, yielding corresponding alkanes yields of 97.8% (n-C 9 ), 96.4% (n-C 13 ), 94.3% (n-C 15 ) and 92.9% (n-C 17 ). The TOFs were calculated as 426–719, 241–343 and 148–243 h −1 for NiCeAl-EISA, NiCeAl-WI and NiCeAl-CP catalysts, respectively. Jatropha oil and waste cooking oil were also converted into liquid alkanes (C 13-18 ) with a total yield of 95.4% and 93.7%, respectively. The NiCeAl-EISA catalyst exhibits superior catalytic activity and remained stable with 92.2% n-C 11 yield after 11 consecutive runs, as compared with NiCeAl-WI and NiCeAl-CP. This significant increase in catalyst activity and stability is closely correlated with the tunable SMSI of Ni/CeO 2 -Al 2 O 3 catalyst, which facilely forms abundant oxygen vacancies and interfacial sites (Ni δ+ -O V -CeO x ). This suppresses strong Ni-Al interaction, thus exposing more active and robust Ni sites to promote R-COOH → R-CHO reduction to produce more alkanes. The weakened Ni-Al interaction also reduces the strong acidity and consequently inhibits the coke formation and simultaneously restrains C–C bond cleavage of hydrocarbons.
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危险品化学品经营许可证（带存储）